Trolley-track



(No Model.)

L. GOBURN.

TROLLEY TRACK.

N0. 365,240. Patented June 21, 1887.

, UNITED STATES LEMUEL COBURN, OF HOLYOKE, MASSACHUSETTS.

TROLLEY-TRAC K.

SPECIFICATION forming part of Letters Patent'No.365,240, dated June 21,1887.

Application filed March 28, 1587. Serial No. 232,710.

To all whom, it may concern.-

Be it known that I, LEMUEL COBURN, a citizen of the United States, residing at Holyolre, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Trolley Tracks and Carriers, of which the following is a specification.

This invention relates to trolley tracks and carriers, the object being to provide a track of improved construction, particularlyin respect to strength, and a carrier adapted to move thereon; and the invention consists in the peculiar construction and arrangement of the track and carrier, all as hereinafter fully described, and pointed out in the claims.

In the drawings forming part of this specification, Figure 1 is a perspective view of a trolley track and carrier constructed according to my invention, one side of the track be ing shown partly broken away. Fig. 2 is a perspective view of the carrier separate from the track. Fig. 3 is a transverse section of the track.

In the drawings, A indicates the trolleytrack, which consists, substantially, of a metallic tube made preferably of wrought-iron rolled to the form shown, and having perforations 2 through its upper side, through which to pass from below belts or screws to secure the track overhead in operative position. The sides 3 of the said track A are at right angles to its upper side, 4, and the lower edges of the sides 3 are bent inward and upward, thereby giving to them substantially a half-round form in cross-section, leaving a longitudinal slot, b, in the lower side of the track A. The said l1alf-round-fornied lower edges of the sides 3 constitute roller-grooves 5, parallel to each other, extending the whole length of'the track.

The above-described form and construction of the track A, including the said halfiround roller-grooves 5, constitute special elements of strength and great resistance against any do fleetion of the track between its ends, supposing that it is suspended by bolts at said ends, or between which there may be considerable length of track. The sides 3 of the track being in a line with any load to which (No model.)

the latter is subj ected,constitute of themselves such a rigid bridge feature of the construction as greatly strengthens the track, and the said half-round roller-grooves 5 add considerably to said rigidity and resistance to deflect-ion under a load.

The carrier, which is adapted to operate in the above-described tubular track,consists of a hanger, 6, having a transverse pin, 7 through its upper end, on which are hung two rollers, 8, which are adapted to roll in the grooves 5 in the track in the position shown in Fig. 1. In the lower end of said hanger is shown a rod, 9, passing transversely through the same, as an illustration of one means for attaching any object thereto which it is desired to suspend on the track A and move lrom place to place thereon.

It will be seen that the hanger 6 occupies a pendent position in the slot I), between the said roller-grooves 5, thereby bringing the weight of any object attached to the hanger equally upon each of the sides 3 of the trolley-track. The said hanger and the rollers hung thereto, as described, may be of suitable metallic or other constructionsuch as may he demanded by the use to which the track and carrier are to be adapted.

\Vhat I claim as my invention is- 1. A trolley-track consisting of a tube of substantially rectangular cross-section at its upper portion, and having the lower edges curved in toward the median line and then turned upward, so that the bottom of the tube has a rounded trough at each side of a longitudinal central opening, substantially as described.

2. The combination, with a trolley-track having a round-bottomed trough at each side of a central opening, of a carrier consisting, essentially, of two rollers rounded on their peripheries to fit the rounded troughs, and a hanger suspended from an axle uniting said rollers.

LEMUEL OOBURN.

\Vitnesses:

H. A. CIIAPIN, G. M. CHAMBERLAIN. 

